Document 4Qw7jLMzVO79D0V84xEqrpoop

c 0 p T 5BMJ ABMDOR RESEARCH 7G0NDATIDN CHICAGO, ILLINOIS M. H. Detriek Company III West Washington Street Chicago 2, Illinois Re: Test No. 3475-2 Gentlem.: Samles of insulating materials were sent to this laboratory for test. The samples consisted of the following materials: 1. Mineral Wool Insulating Slock 11. Monoseal - Mix #A 111. Moooseal - Mix #B Moooseal Mixes (by Tfeight) MineraSlool 100 parts Asbestos 22 parts Bentonite 28 parts Calcined Diatomaceous Earth 56 parts Lumrdte Cement 150 parts Mix *A" 15 parts Calcined Diatomaceous Earth 2 parts The mineral wool block ms cut into sections approximately 2" x 1" x 6" and the Uonoaeal mixes were wet with enough water so that they could be molded into block 1* x 1* x 6. These blocks were allomd to set for 24 hours and then dried* The molded blocks and cut sections were placed in an electric kiln, brought up to a temperature of 1100 7. overnight. The next morning the temperature was raised to 1200 7. and held there for 20 minutes, after which the first test block of mineral wool ms removed from the furnace and cooled in air. Other sarnies of each mix were taken from the furnace, in the same manner, at intervals of 1400, 1600, 1300 and 2000 7. All samples received identical heat treatment as indicated for the 1200 F. temperature except for one sample of mineral wool. This test block was placed in the furnace at 1800 0 7. and removed at the 2000 tempera ture interval. No visible change took place in any of the smaples tested except for a change in color and a slight linear shrinkage. Respectfully submitted, ARMOUR RESEARCH FOUNDATION * R. S. Olsen (signed) - 1? ~